Java中的ConcurrentSkipListSet add()方法

java.util.concurrent.ConcurrentSkipListSet.add() 方法是Java中的一个内置函数，用于将元素插入到这个集合中。

语法：

ConcurrentSkipListSet.add(E e)

参数： 该函数接受一个单一的参数e即要插入的元素。

返回值： 该函数返回一个True布尔值。

下面的程序说明ConcurrentSkipListSet.add()方法：

程序1： 将整数添加到集合中。

// Java program to demonstrate add()
// method of ConcurrentSkipListSet
  
import java.util.concurrent.*;
  
class ConcurrentSkipListSetAddExample1 {
    public static void main(String[] args)
    {
        // Creating a set object
        ConcurrentSkipListSet<Integer> Lset = 
                 new ConcurrentSkipListSet<Integer>();
  
        // Adding elements to this set
        for (int i = 10; i <= 50; i += 10)
            Lset.add(i);
  
        // Printing elements of the set
        System.out.println("The set contains: ");
        for (Integer i : Lset)
            System.out.print(i + " ");
    }
}

The set contains: 
10 20 30 40 50

程序2： 将字符串添加到集合中。

// Java program to demonstrate add()
// method of ConcurrentSkipListSet
  
import java.util.concurrent.*;
  
class ConcurrentSkipListSetAddExample2 {
    public static void main(String[] args)
    {
        // Creating a set object
        ConcurrentSkipListSet<String> Lset = 
                     new ConcurrentSkipListSet<String>();
  
        // Adding elements to this set
        Lset.add("alex");
        Lset.add("bob");
        Lset.add("chuck");
        Lset.add("drake");
        Lset.add("eric");
  
        // Printing elements of the set
        System.out.println("The set contains: ");
        for (String i : Lset)
            System.out.print(i + " ");
    }
}

The set contains: 
alex bob chuck drake eric

参考文献： https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#add(E)